
Ensure that the actuators are always operated in faultless condition. Any damage or faults, and changes
in the operational characteristics that may affect safety, must be reported at once.
2. Usage as per specification
PSR-E quarter turn actuators are exclusively designed to be used as electric valve actuators. They
are meant to be mounted on valves in order to run their motors.
Any other use is considered to be non-compliant and the manufacturer cannot be held liable for
any damage resulting from it.
The actuators can only be used within the limits laid out in the data sheets, catalogues and other
documents. Otherwise, the manufacturer cannot be held liable for any resulting damage.
Usage as per specification includes the observance of the operating, service and maintenance
conditions laid down by the manufacturer.
Not to be regarded as usage as per specification are mounting and adjusting the actuator as well as
servicing. Special precautions have to be taken while doing this!
The actuators may only be used, serviced and repaired by personnel that is familiar with them and
informed about potential hazards. The specific regulations for the prevention of accidents have to
be observed.
Damages caused by unauthorized modifications carried out on the actuators are excluded from the
manufacturer's liability.
Supply voltage may only be switched on after the proper closure of the main cover or terminal box.
Electrical wiring is done to a terminal block under the actuator cover.
3. Storage
For appropriate storage, the following instructions have to be met:
Only store the actuators in ventilated, dry rooms.
Store the actuators on shelves, wooden boards, etc., to protect them from floor moisture.
Cover the actuators with plastic foil to protect them from dust and dirt.
Protect the actuators against mechanical damage.
4. Operating conditions
Standard actuators may be operated at ambient temperatures from -25°C to +70°C.
Operating modes correspond to IEC 60034-1, 8: S2 for short cycle 20 min. S3/S4 control operation 1200
c/h –25% ED at 25°C.
For protection against moisture and dust, enclosure rating is IP65 (optionally IP67) according to EN
60529. To ensure this enclosure, the cover must be fitted correctly and the screws tightened cross wise
after opening. The hand wheel must be fitted to the hand wheel shaft. The cable glands must be
suitable for the wiring and correctly fitted to the actuator. To maintain the degree of protection IP65
(resp. IP67), cable glands M20x1,5 must be used which are suitable for the cable diameter.
Space needed to remove the cover: 100 mm above the actuator